# Copyright (c) 2024, Shanghai Iluvatar CoreX Semiconductor Co., Ltd.
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#
#    Licensed under the Apache License, Version 2.0 (the "License"); you may
#    not use this file except in compliance with the License. You may obtain
#    a copy of the License at
#
#         http://www.apache.org/licenses/LICENSE-2.0
#
#    Unless required by applicable law or agreed to in writing, software
#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
#    License for the specific language governing permissions and limitations
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from ...ir import Graph, GraphTransform
from ...ir.operator_type import OperatorType
from ..base_pass import BasePass, registe_pass


@registe_pass(level=1)
class DropoutPass(BasePass):
    def process(self, graph: Graph) -> Graph:
        ops = list(graph.operators.values())
        transform = GraphTransform(graph)
        for op in ops:
            if op.op_type == OperatorType.DROPOUT:
                try:
                    transform.delete_operator_and_link(op)
                except Exception as ex:
                    print(f"Delete dropout fail for {op.name}, got error {ex.args}")

        return graph
